Combined churn and freezer.



PATBNTED JUNE 21, 1904, J. R. YARB'ROUGH. COMBINED GHURN AND FREEZER.

APPLIUATION FILED JUNE 30. 1903.

H0 MODEL.

Patented. June 21. 1904.

Fries.v

JOSlAH RIDDICK YARBROUGH, GF FLORENCE, ALABAMA.

COMBINED CHURN AND FEEZER.

SPECIFICATION forming part of Letters Patent No. 763,139, dated June 21,1904.

Application filed June 30, 1903. Serial No. 163,779. (No model.)

Tamil, iti/1,0111, it may concern.-

Be it known that I, JosIAH RIDDICK YAR- nnoUeu, a citizen of the UnitedStates, residing at Florence, in the county of Lauderdale and State ofAlabama, have invented a new and useful Improvement in a Combined Churnand Freezer, of which the. following is a specification.

My invention relates to a combined churn and freezer, and has for itsobjects to produce a device of this character of comparatively simpleconstruction which will be efficient in operation, one in which theinner cream-receiving vessel may be readily cleaned, one in which thecream at the bottom of the Vessel will be brought into contact with thecooling medium, and one in which the upper member of the dashcr willhave an automatically-reversible rotary motion during the reciprocationof the dasher.

'lo these ends the-invention comprises the novel details of constructionand combination of parts more fully hereinafter described.

in the accompanying drawings, Figure 1 is a central verticallongitudinal section of adevice constructed in accordance with myinvention. Fig. 2 is a detail perspective view of the removable bottomof the cream-receptacle, illustrating the manner of locking the same inplace. Fig. 3 is a similar view of the upper rotary dasher member.

Referring to the (.lrawings, 1 indicates the outer vessel, and Q theinner vessel, of my improved device. .l`hese vessels are composed of tinor other suitable or desired material and are preferably of cylindricalform, the inner vessel being of suf-h a size relative to the outervessel that when the parts are assembled for operation an interveningspace 3 betweenthe vessels and surrounding the inner one will beprovided for the reception of ice or other suitable cooling medium. Theinner vessel is provided with a cover 4, which has a dependingperipheral iiange for engagement over the open end of the vessel and acentral opening 5 for the reception of the dasher-rod or shaft 6. '.lhecover has formed upon it adjacent to and surrounding its central opening5 a chamber or compartment 7,L which receives a disk 8, of leather orother suitable packing material, which snugly embraces the shaft 6.

The inner vessel 2 has a primary bottomi), which in practice restsflatly upon the bottom of the outer vessel, and a secondary removablebottom preferably of conical form and disposed with its base restingupon the upper face of the primary bottom, whereby a compartment 11 isformed, which in practice is filled with ice or other cooling mediumsuch as is employed in the outer vessel. The secondary bottom has uponits base a peripheral flange 12, provided with a plurality of radialrecesses 13, which when the bottom is inserted to position registerwithradial fingers 14:, attached to the inner side walls of vessel 2 andspaced from its primary bottom suiiicicntly for the fiange 12 to passbeneath them for maintaining the bottom 10 in pla'ce, as will be readilyunderstood, it being understood, of course, that other means may beemployed `for this purpose.

15 is a clamping member, preferablyv composed of wire, bent to form apair of parallel.- spaced arms, which in practice extend transverselyacross the open end of vessel 1 and have at one end upturned fingers 16,which engage through suitable perforations in the Vside wall of thevessel beneath its peripheral bead or flange, the member being bent atits other end to form a spring-finger 17, which extends slightlydownward and inward forengagement with the said bead to lock the memberin position. 1n practice when the parts are assembled the member 15bears upon the cover of the inner vessel for maintaining said coversecurely in position and the vessel in proper position within the outervessel, the member being upwardly arched at its center for engagementover the upwardlyarched cover 4. 1t is also to be noted in thisconnection that in practice the parallel arms of the member will lie oneupon either side of the shaft (S when the latter is in position, thusobviating any conflict of thc parts in assemblage.

The shaft 6' is provided at its upper end with a handpiece 18, which inpractice is grasped by the operator, and at its lower end with athreaded portion 19, which engages a central internally-tlneaded openingformed at the apex of a coneeshaped hollow dasher member 20, the wallsot' which are provided with perforations 21, which permit the passage ofthe cream during the reciprccation of the dasher, the latter being of asize and contour to seat or nest upon the conical bottom of the vessel 2during the operation of the parts. The fixed dasher is provided with aperipheral liange 22, 4which in practice contacts at its outer edge withthe .inner wall ot' the cream vessel, whereby the shaft is properlyguided in its reciprocatory movement and the wall of the vessel is freedfrom the adherence ot cream thereto.

23 is a rotary dasher member mounted upon the shaft (i directly abovethe dasher 2O and maintained thereon by a movable adjustable collar 24,adapted to be held in fixed relation to the shaft by a set-screw or thelike. The rotary dasher 23 is composed, preferably, of sheet metal andis oi substantially propeller form, having four radiating blades whichare suitably inclined transversely between the vertical and horizontalto insure their passage through the cream during the reciprocation ofthe shaft, imparting to the dasher a rotary motion, which of coursereverses at the beginning of each stroke oi' the shaft G-that is, whenthe shaft begins its upward movement the dasher will rotate in onedirection and when the shaft begins its downward movement the rotationof the dasher will be reversed and it will rotate in the oppositedirection. Thus it will be seen that the cream will be thoroughlyagitated and stirred by the said dasher.

ln practice the removable bottom l() is first filled with ice, thevessel 2 inverted, and the bottom secured in position in the mannerabove explainedI by giving it a partial turn for engagement beneath thetingers 1 4. 'l he vessel 2 is then lilled with cream or the like andproperly closed and positioned in the vessel 2 and the space 3 filledwith ice. Reciprocation of the shaft 6 ycauses the dashers 20 23 tothoroughly agitate the cream, as will be readily understood, whereby'the contained air will be freed and the cream rapidly frozen. lt will benoted in this connection that the cream in the vessel 2 is subiccted tothe action of the cooling medium at the bottom of the vessel as well asthe sides, whereby the treezing of the mass will be equalized. lt isalso to be noted that when the vessel 2 is to be cleaned the bottom l0may be readily removed, thus greatly facilitating the cleansingoperation. When the device is to be cniployed for churning, the mannerof assemblage and the operation or' the parts are the same as that abovedescribed, except that it is preferable to employ water as the coolingmedium in the outer vessel.

From the foregoing it will be seen that l produce a device ofcomparatively simple construction, vone which will be elhcient inoperation, and one which in practice will admirably perform 'itsfunctions. ln attaining these ends l do not limit myself to the precisedetails herein show-n and described inasmuch as minor changes maybe madetherein without departing from the spirit or scope of the invention.

Having thus described my invention, what l claim, and desire to secureby Letters Patent, isp ln a device of the class described, thecombination with an outer vessel, of an inner vessel situated thereinand having a primary bottom and an inner secondary hollow bottom servingin conjunction with the primary bottom to form a chamber, said secondarybottom being wholly removable from the vessel andhaving its normallylower end entirely open, means lor securing' the open end of thesecondary bottom removably tothe primary bottom whereby the latterlforms a closure therefor, and a dasher disposed for operation withinthe inner vessel.

ln testimony that I claim the foregoing as my own l have hereto afiixedmy signature in the presence oi two witnesses.

JNo. in. HUGns'roN.

